John p



J. F- O'CONNOR.

0. APPLICATION FILED NOV B. 1', 3 1 4,01 4 Patented Aug. 26, 1919.

JOHN F, OCON'NOR'OF CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM H. MINER, OF

GHAZY, NEW YORK.

AN TIFBICTION-BEARING.

Specification of Letters Patent.

Patented Aug. 26, 1919.

To all whom it may concern:

Be it known that I, J OHN F. OConnon, a citizen of the United States,residing at Chicago, in the countyof Cook and State of Illinois, haveinve ted a certain new and useful Improvement in Antifriction Bearings,of which the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings,

forming a part of this specification.

This invention relates to improvements in anti-friction bearings.

The object of this invention 13 to provide an anti-friction bearing ofthe gravity actuated type and especially adapted for use as a sidebearing for railway cars and more specifically, the object of theinvention is to provide novel means for insuring the return of therocking element to normal position after each actuation of the bearmg.

In the drawing forming specification, Figure 1 is a vertical, sectionalview, taken through portions of body and truck bolsters of a railway carshowing my improvements applied thereto. Fig. 2 1s a top plan view ofthe side bearing proper. And Fig. 3 is a vertical, sectional view, takensubstantially on the line 3-3 of Fig. 1.

In said drawing, 10 denotes the under side of a body bolster and 11 theupper side of a' truck bolster of a railway car. As shown, my improvedside bearing is applied to the truck bolster and the same consists,broadly, of a housing or base casting A, a

rocker proper B, and a pair of pendulum elements C-C.

The base casting A is of substantially rectan ar formation having ustanding side we ls 12-12 and inclined en walls 13-13. The base castin Ais provided with flanges at the bottom t ereof, as indicated at 14:, bywhich it may be riveted to the truck bolster.

i The casting A is formed also with a bottom wall 15 adapted to act as afor the rocker B. r

The rocker B, as shown, is provided with an upper cylindrical bearingsurface 16 and a correspon g concentric lower bearing surface 17 the twobearing surfaces 16 and 17 being connected by flat surfaces 18-18,preferably arranged tangential to the upper bearing surface 16. Therocker B is formed on each side thereof with bearing surface 56 anormally vertically extending slot 19,

a part of this the rocker are adapted to cotiperate with theinclined endwalls 13 of the base casting to limit the rolling movement of therocker, as will be evident from Fi 1, where one extreme position of therocfier is shown in dotted lines.

Each pendulum member C is preferably of plate-like form having asector-like lower section, as indicated at 21, and an arm 22. On itsouter side, each pendulum member 0 is provided with a circular boss 23adapted to act as a pivot for the pendulum member, said pivot boss 23being mounted in a suitable bearing provided therefor in the side wall12 of the base casting, as most clearly shown in Fig. 3. This may beaccomplished by slotting the side walls of the base casting, asindicated at 24. At their upper ends, the pendulum members C areprovided with inwardly extending circular bosses 25 arranged to. beseated within the corresponding vertical recesses 19 in the rocker. Thelower sector-like section of the element C is preferably extended belowthe bottom of the rocker and for this pur pose the base casting A may berecessed'as indicated at 26,44)v accommodate the pendulum elements.

The normal position of the parts is as shown in full lines in Fig. 1. Inoperation, assuming that the truck bolster remains stationary and thebody bolster moves to the left as viewed in Fig. 1, the rocker will beshifted to the position shown by dotted lines. Simultaneously with themovement of the rocker, it is evident that the two pendulum elements Cwill be oscillated about their respective pivot lugs 23 in such mannerthat the sector-like sections of the pendulum elements will be elevatedto the dotted position shown in Fig. 1. Upon release of the actuatingpressure, it is evident that the rocker itself will tend to return tonormal andv this return movement will be greatly accentuated by thependulum elements 0 acting through the lugs 25 that cooperate directlywith the rocker'B. By employing the pendulum elements, the return of therocker to normal is greatly fa.- cilitated and made more certain and inaddition the mounting of the pendulum elements is such that they willserve to retain the rocker in central position with respect to the basecasting A and thus eliminate the necessity for the usual toothedengagement between the rocker and base-casting.

I claim: V

1. In an anti-friction bearing, the combination with a housing, of ananti-friction element disposed within the housing and adapted forrolling movement, and means for insuring return of said element tonormal position after each actuation thereof, said means including amember pivotally mounted on the housing, said member being eccentricallyweighted and having a sliding connection with said element. 7

2. In an anti-friction bearing, the combination with a housing, ofananti-friction element adapted for rolling movement, and a pendulummember pivotally mounted on the housing, said pendulum member andanti-friction element havin cooperatin engaging means so arranged t atupon r0 ling movement of the element, the pendulum member is shifted toa position of unstable equilibrium and is thereby adapted to return theanti-friction element to normal upon release of the actuating ressure.

3. In an anti friction bearing, the combination with a housing having abottom bearing Wall, of a rocker disposed within the housing and adaptedto roll on said bearing wall, and a pendulum member pivotally mounted onthe housing and having a sliding pivotal connection with the rocker.

4. In a side bearing for'railway cars, the combination with a basecasting adapted to be secured to a truck bolster, of a rocker disposedwithin said base casting, a pendulum member disposed at each side of therocker,

each pendulum member being pivotally mounted on the base casting andhaving a sliding pivotal connection with the rocker, the rocker beingadapted to oscillate the pendulum members about their ivotal connectionswith the base casting when the rocker is actuated.

5. Ina side bearing for railway cars, the combination with a hollow basecasting having side walls, the side Walls 'being provided with bearingseats, of a rocker mounted within the base casting between said sidewalls, pendulum members at each side of the rocker and located betweenthe rocker and the side walls of the base casting, each pendulum memberhaving a bearing ivot stud cooperable with the bearing seat of theadjacent side wall, and means for slidably connecting the rocker withthe pendulum members so arranged that movement of the rocker to eitherside of normal causes oscillation. of the pendulum members relatively tothe base casting.

6. In a side bearing for railway cars,'the combination with a basecasting having side, end and bottom walls, of a rocker within said basecasting and bearing upon said bottom wall, the end walls of sald castingbeing arranged to limit the rolling movement of

